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1997 cadillac deville
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49 Posts
Discussion Starter #1
My keyless entry quit working today. I tried re-programming it but when I go into the computer under RFA it just says "No RFA DaTA". I programmed my remote a couple of months ago and installed a new battery. None of the options are under RFA to program the remote.

Any ideas whats going on?

any help would be greatly appreciated.

thanks,

chuck
 

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1999 DeVille D'Elegance
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5 Posts
Your car has 2-nd generation OBD. Computer will show only two options: "RFA Codes" and "RFA Codes Clear". If you want to reprogram remote then go to the dealer because you'll need 'Tech 2' to do the programming.
 

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1997 cadillac deville
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49 Posts
Discussion Starter #3
No. I've programmed my keyless entry before and it was succesful. When I bought my car it didn't come with a remote. I purchased one off e-bay and programmed it myself. It just all of a sudden quit working and all the options are gone under RFA in the computer. I don't even have the option to clear codes under RFA. all it says is "No RFA Data." it won't let me select anything.
 

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1999 DeVille D'Elegance
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5 Posts
Probably in this case your main computer can't see RFA module, but then you should see error message when you ran diagnostic. In my 98 DeVille I had to go to the dealer, but I had battery disconnected.
 

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Registered
1997 cadillac deville
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49 Posts
Discussion Starter #5
I ran diagnostics before and came up with 2 codes. PCM P0603 History: Control module long term memory reset. and IPC B1552 History: Keep alive memory (KAM) Error.

I'm not really sure what they mean but if anyone could help me that would be great. I did disconnect the battery about 2 months ago but the remote entry worked till yesterday.

thanks a lot,

chuck
 

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1996 Cadillac Deville, 2004 Cadillac DTS, 2011 CTS AWD Coupe
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331 Posts
Maybe reset the computer by disconnecting the battery for a good 10 min? Something easy to try
 

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Registered
1999 DeVille D'Elegance
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5 Posts
If you'll disconnect computer then for sure you'll have to go to the dealer.
Here is your codes:
DTC B1552 Keep Alive Memory (KAM) Error
Circuit Description

DTC B1552 indicates that the KAM in the instrument cluster is reset. The KAM in the instrument cluster normally resets whenever power or ground removes from the instrument cluster. DTC B1552 sets when the battery is disconnected and reconnected, for example.
Conditions for Setting the DTC

The DTC sets under the following conditions:
If the Class 2 serial data line is shorted and the PZM attempts to activate the low power mode (approximately 20 minutes after the ignition switch is turned to OFF).
Power or ground is disconnected from the instrument cluster.
Power or ground is reconnected to the instrument cluster.
Action Taken When the DTC Sets

When the DTC sets, the following actions occur:
The instrument cluster KAM data (trip odometer) is reset to an initial value and the Average Fuel Economy.
Fuel Used display values are reset to zero.
Diagnostic Aids

If DTC B1552 ses without a battery disconnect:
Check for PZM DTC's B1972 or B1973, if current perform the appropriate DTC diagnosis.
Ensure the good terminal contacts exist at IPC connector C1 terminals A1, B1, A12 and B12. If terminal contact is ok , replace the instrumant cluster.


DTC P0603 Control Module Long Term Memory Reset

Circuit Description

The PCM has a memory area where it stores certain data it needs to save when the key is turned OFF. This area is called Keep Alive Memory. This diagnostic test monitors the PCM's keep alive memory for a loss or unintended change of data. If such a condition occurs, DTC P0603 will set.
Conditions for Running the DTC

Tested continuously.
Conditions for Setting the DTC

Keep alive memory checksum does not match previous checksum.
Action Taken When the DTC Sets

Clear all keep alive memory locations.
The Malfunction Indicator Lamp (MIL) will not illuminate.
No message will be displayed.
Conditions for Clearing the DTC

A History DTC will clear after forty consecutive warm-up cycles with no failures of any non-emission related diagnostic test.
A Last Test Failed (current) DTC will clear when the diagnostic runs and does not fail.
Use a scan tool to clear DTCs.
Interrupting PCM battery voltage may or may not clear DTCs. This practice is not recommended. Refer to Clearing Diagnostic Trouble Codes in PCM Description and Operation.
Diagnostic Aids

If the battery has been disconnected for any reason DTC P0603 will set. The PCM keeps a running check on the memory; if memory changes it resets. An intermittent loss of power or ground to the PCM will cause a reset.
 
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